Perhaps you should try some spelling variations:
"coder coder defect conic programming" » "coder coder defect logic programming" (Expand search), "coder coder defect cone programming" (Expand search), "coder coder defect convex programming" (Expand search), "coder solder defects conic programming" (Expand search), "coder bone defect conic programming" (Expand search), "coder nose defect conic programming" (Expand search), "coder coder defect on programming" (Expand search), "coder coder defect bone programming" (Expand search), "coder decoder defect conic programming" (Expand search), "code code defect conic programming" (Expand search), "decoder codec defect conic programming" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder defect conic programming") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder defect conic programming\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder defect conic programming ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder defect conic programming") OR ("on python python python programming"))*.